Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/213807
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | SOLUBILIZATION OF PHOSPHOLIPID BILAYERS CAUSED BY SURFACTANTS |
Autor: | Maza, Alfons de la CSIC; Parra Juez, José Luis CSIC | Fecha de publicación: | 1993 | Editor: | John Wiley & Sons | Citación: | JAOCS, Journal of the American Oil Chemists' Society 70: 699- 706 (1993) | Resumen: | leads to the rupture of such structures and the solubilization of the phospholipid components. In this paper, solubilization is regarded as a decrease in light scattering of liposome suspensions. To this end, in accordance with the nomenclature, adopted by Lichtenberg, three parameters were considered as corresponding to the effective surfactantllipid molar ratios (Re) at which light scattering starts to decrease, Re,,; reaches 50% of the original value, Rem; and shows no further decrease, Resol. These parameters corresponded to the Re at which the surfactant (i) saturated the liposomes, (ii) resulted in a 50% solubilization of vesicles and (iii) led to a total solubilization of liposomes. The surfactants tested were the nonionic surfactant octylphenol ethoxylated with 10 units of ethylene oxide or Wton X-100 (OP-lOEO), two anionic surfactants, sodium dodecyl sulfate and sodium dodecyl ether sulfate, and an amphoteric surfactant dodecyl betaine (D-Bet). Unilamellar liposomes formed by egg phosphatidylcholine containing increasing amounts of phosphatidic acid were used. The Re parameters were the lowest for D-Bet, followed by OP-lOEO, whereas the anionic surfactants always showed the highest values regardless of the electrical charge of the lipid bilayers. These parameters seem also to be inversely related to the critical micelle concentration (CMC) of the surfactant, except for OP-1OEO. Moreover, the CMC values of the surfactantllipid systems at 0.5 mM lipid concentration corresponded in al1 cases to the surfactant concentration at which liposomes were saturated by surfactants. As a consequence, this ratio can be regarded as an interesting parameter associated with the mixed micelle formation in liposome solubilization. | Versión del editor: | http://dx.doi.org/10.1007/BF02641006 | URI: | http://hdl.handle.net/10261/213807 | DOI: | 10.1007/BF02641006 | Identificadores: | doi: 10.1007/BF02641006 issn: 0003-021X |
Aparece en las colecciones: | (IQAC) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
415088.pdf | 269,91 kB | Unknown | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
18
checked on 29-mar-2024
WEB OF SCIENCETM
Citations
14
checked on 24-feb-2024
Page view(s)
106
checked on 18-abr-2024
Download(s)
206
checked on 18-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.